Easily Recognizing Key / key

Keys,might be used many times per day.no matter who you are, such situations may be confronted with:searching the very key from a cluster of keys; being confused about which is the right one when being asked to provide a key for a particular purpose from possessed a bunch of keys.To deal with such annoying problems,the special kind of key has been created.This design adds an apparent box onto the handle of the key,where contain some tags used make some marks ,and consequently solve problems mentioned above.All efforts that have been put into is to help people to be kept away from the issue"Which is exactly the right key I need?"